Plane Crash: Details on the crashed #MH17, See who was on the flight

A Malaysia Airlines passenger jet crashed in a rebel-controlled part of eastern Ukraine on yesterday, spurring swift accusations from Ukrainian officials that "terrorists" shot down the aircraft.

The United States has concluded a missile shot down the plane, but hasn't pinpointed who was responsible, a senior U.S. official told CNN's Barbara Starr.

The Boeing 777 with 298 people aboard fell from the sky near the town of Torez in the Donetsk region of eastern Ukraine, officials said.

A top Ukrainian official said the plane, which was on the way from Amsterdam to Kuala Lumpur, was flying at about 10,000 meters (nearly 33,000 feet) when the missile hit.

A radar system saw a surface-to-air missile system turn on and track an aircraft right before the plane went down, the senior U.S. official said.

A second system saw a heat signature at the time the airliner was hit, the official said.

The United States is analyzing the trajectory of the missile to try to learn where the attack came from, the official said.

The Obama administration believes Ukraine did not have the capability in the region -- let alone the motivation -- to shoot down the plane, a U.S. official told CNN's Jake Tapper.

The 15 crew members on Malaysia Airlines Flight 17 were all Malaysian nationals, officials said.

Malaysia Airlines also gave a breakdown of the known nationalities of the 283 passengers: 154 were Dutch, 27 were Australians, 28 were Malaysians, 12 were Indonesian, nine were from the United Kingdom, four were from Germany; four were from Belgium, three were from the Philippines and one was Canadian.

Authorities were still trying to determine the nationalities of the other 41 passengers.

The International AIDS Society said in a statement that "a number of colleagues and friends" were on the plane, on the way to attend the 20th International AIDS Conference in Melbourne, Australia.

"At this incredibly sad and sensitive time the IAS stands with our international family and sends condolences to the loved ones of those who have been lost to this tragedy," the statement said.

It's a pity... Nigerians are "lucky"